Joseph patrick



(N0 Model.)

J. PATRICK.

I AUTOMATIC LUBRIGATOR. No. 360,243. Patented Mar. 29, 1887.

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BY um w ATTORNEYS.

Mrs STATES JOSEPH PATRICK, OF FRANKFORT-ON-THE-MAIN, GERMANY.

AUTOMATIC LUBRICATOR.

SPECIFICATION forming part of Letters Patent No. 360,243, dated March 29, 1887.

Application filed April 5, 1886. Serial No. 197,767. (No model.) Patented in Belgium May 15, 1879, No. 48,041; in England July 24, 1879. No. 3,012; in Germany August 22, 1875), No. 6,703, and in Austria-Hungary March 27, 18S0,1\'o.946 and No. 688.

T0 to whom it may concern:

Be it known that I, J osnrn PATRICK, a subject of the Queen of Great Britain, residing at Frankforton-theMain, in the Empire of Germany, have invented certain new and useful Improvements in Automatic Lubricators, (and which has been patented in Belgium, May 15, 1879, No. 48,041; Great Britain, July 24, 1879, No. 3,012; Germany, August 22, 1879, No. 6,763, and Austria-Hungary March 27, 1880, Nos. 946 and 688,) of which the following is a specification.

This invention refers to anew method of feeding a lubricant to surfaces; and it consists in utilizing the fact that different metals have a different expanding coefficient when heated to the same degree; and in carrying out my invention I employ the herein-described method of automatically feeding lubricating-oil to surfaces, consisting in providing two adjacent surfaces made of difierent metals, which surfaces, when in a quiescent state, close the feeding of the lubricant, but when heated separate the one from the other in consequence of the different expanding coefficient of the said different metals.

In carrying this my invention into effect I construct an apparatus wherein the differential expansion of metals when heated is utilized to effect a communication between the oilreservoir and the chamber into which the oil is to be introduced. I thus produce an automatic lubricator which has no taps, valves, wick, springs, or similar movable parts, and

" which will not be liable to readily get out of repair, and which cannot fail to operate.

It will at once be obvious that different metals can be used for this purpose, and that thethrough at b to connect the space between the cups A and B with the inside of the cup B, and thus equalizes the pressure or vacuum, as the case may be. The two cups are held tightly the one within the other, and a steam-tightjoint is effected by a lid, F, which is provided with an air-tight compartment, J, serving, by its non-conducting properties separating the heat inside from the cold outside, to prevent condensation in lubricators which are much "exposed, as on locomotives and the like. The lid F has a hole, G, in its center, through which the apparatus is filled. A screw-cap, H, fits on the lid F, closing the hole G. A perfect steam-tight joint which is not subject to premature wear with being opened and closed is effected by grinding the plug H with emery and oil onto its seat at the top of the opening G of the lid F. The plug H, after being thus adapted to its seat, is attached to the screw-cap H by the pin h in such a manner that it can adjust itself and produce a perfect joint with the top of the opening G. The bottom of the cup B has a hole bored through it, into the upper conical end of which the conical point of a steel plug, 0, fits, the said plug being carried by a tube, E, cast in one piece with the cup B. The plug 0 is screwed into the tube E, and can be adjusted as required. A strainer, L, is provided, to stop any impurities which may have entered the apparatus. It will thus be seen that as soon as the said apparatus becomes warm the steel plug, expanding in a less degree than the gun-metal, into which it is screwed, is lifted somewhat out of its conical seat, and a passage is thus opened,

through which the oil passes partly by its own weight and partly by capillary attraction, the pressure or vacuum, as the case may be, being equal above and below. Then the engine or machine stops and the apparatus cools, the metals contract and the plug again tightly closes the said passage or hole, preventing all waste of oil when the engine or machine is not working. The said hole cannot become stopped, as each time the metals contract the steel plug forces out any substance which may form an obstruction.

The consumption of oil can be exactly regulated by tightening or unscrewing the plug 0, as the case may be. This operation can be cf fected with an ordinary screw-driver passed through the hole G. Freezing of the said apparatus is prevented even in the coldest weather, the space between the two cups being fitted with steam, which, as soon as the machine starts, melts the oil at once.

Having thus fully described my said invention and the manner of employing the same, what I claim, and desire to secure by Letters Patent of the United States of America, is

1. In an automatic lubricator, the combination, with a cup having a discharge-passage, of a plug fitting into the said discharge-passage, the saideup and plug having different expanding coefficients.

2. In a lubricating device, the cups A and B and the pin 0, in combination with the lid F, having the aperture G, and the screw-cap H and plug H, substantially as shown and described.

3. In a lubricating device, a lid, F, and an air-chamber attached to the said lid, in combination with the cups A and B, substantially as shown and described.

4. In a lubricating device, the cups A and cup B, suspended in the cup A, the lid F, having the air-chamber J. and the screw-cap H, in combination with the steel plug 0, fitted to screw in the projection E, formed in the bottom of the cup B, substantially as shown and described,

In testimony whereofI have signed my name to this specification in the presence of two subscribing witnesses.

JOSEPH PATRICK.

VVitn esses:

FRANZ WIRTH, FRANZ HASSLACHER. 

